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can: raw: fix ro->uniq use-after-free in raw_rcv() (Linux Linux)

CVE-2026-31532
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.17 % · centile 6 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Rechercher sur…

Description

In the Linux kernel, the following vulnerability has been resolved: can: raw: fix ro->uniq use-after-free in raw_rcv() raw_release() unregisters raw CAN receive filters via can_rx_unregister(), but receiver deletion is deferred with call_rcu(). This leaves a window where raw_rcv() may still be running in an RCU read-side critical section after raw_release() frees ro->uniq, leading to a use-after-free of the percpu uniq storage. Move free_percpu(ro->uniq) out of raw_release() and into a raw-specific socket destructor. can_rx_unregister() takes an extra reference to the socket and only drops it from the RCU callback, so freeing uniq from sk_destruct ensures the percpu area is not released until the relevant callbacks have drained. [mkl: applied manually]

Faiblesses (CWE)

  • CWE-416 — Utilisation après libération

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 514ac99c64b22d83b52dfee3b8becaa69a92bc4a < 1de30576a6dfeaaa27ef91fa272e6b9240b6fbd3 ; affected 514ac99c64b22d83b52dfee3b8becaa69a92bc4a < 64c8553decf5a5f2417bd54761ea0a832c56c4ca ; affected 514ac99c64b22d83b52dfee3b8becaa69a92bc4a < 3f43f12fde34737fba091b7e3ab391e14ddbb0be ; affected 514ac99c64b22d83b52dfee3b8becaa69a92bc4a < 5e9cfffad898bbeaafd0ea608a6d267362f050fc ; affected 514ac99c64b22d83b52dfee3b8becaa69a92bc4a < 572f0bf536ebc14f6e7da3d21a85cf076de8358e ; affected 514ac99c64b22d83b52dfee3b8becaa69a92bc4a < 1a0f2de81f7fbdc538fc72d7d74609b79bc83cc0
Linux · Linuxaffected 4.1 ; unaffected 0 < 4.1 ; unaffected 5.10.258 ≤ 5.10.* ; unaffected 5.15.209 ≤ 5.15.* ; unaffected 6.1.175 ≤ 6.1.* ; unaffected 6.6.136 ≤ 6.6.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD